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ANSI/ASTM A801/A 801M-1999 铁钴高磁性饱和合金规范

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【英文标准名称】:SpecificationforIron-CobaltHighMagneticSaturationAlloys
【原文标准名称】:铁钴高磁性饱和合金规范
【标准号】:ANSI/ASTMA801/A801M-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:合金;钴;铁
【英文主题词】:cobalt;iron;alloys
【摘要】:Thisspecificationcoverstwoiron-cobaltalloytypescurrentlymanufacturedandsuppliedcommerciallyforuseinmagneticcoresrequiringhighpermeabilityatandabove15kG(1.5T)underd-candcertaina-cconditions.Thespecificalloytypescoveredare:AlloyTypeNominalComposition149%Co,49%Fe,2%V227%Co,0.50%Cr,balanceFeThisspecificationalsocoversmaterialssuppliedbyaproducerorconverterintheformandphysicalconditionsuitableforfabricationintopartsthatwilllaterbegivenfinalheattreatmenttoachievethedesiredmagneticcharacteristicsandwhererequired,mechanicalproperties.Itcoversmaterialsuppliedinformofforgingbillets,hot-rolledproducts,cold-finishedbars,andstrip.Thevaluesstatedineithercustomaryunits(cgs-emuandinch-pound)orSIunitsaretoberegardedseparatelyasstandard.Withinthetext,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents:therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.
【中国标准分类号】:H70
【国际标准分类号】:77_080_10
【页数】:
【正文语种】:英语


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基本信息
标准名称:进口220~500kV高压断路器和隔离开关技术规范
中标分类: 电工 >> 输变电设备 >> 高压开关设备
发布日期:
实施日期:2003-07-01
首发日期:
作废日期:
出版日期:
页数:28页
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所属分类: 电工 输变电设备 高压开关设备
【英文标准名称】:StandardPracticeforDeterminationofThermalResistanceofAtticInsulationSystemsUnderSimulatedWinterConditions
【原文标准名称】:模拟冬季条件下测定顶楼绝缘系统热阻性的标准规程
【标准号】:ASTMC1373-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C16.30
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:atticinsulation;convection;thermalresistance;winterconditions
【摘要】:1.1Thispracticepresentsalaboratoryproceduretodeterminethethermalresistanceofatticinsulationsystemsundersimulatedsteady-statewinterconditions.Thepracticeappliesonlytoatticinsulationsystemsthatfaceanopenatticairspace.1.2Thethermalresistanceoftheinsulationisinferredfromcalculationsbasedonmeasurementsonaceilingsystemconsistingofcomponentsconsistentwiththesystembeingstudied.Forexample,suchasystemmightconsistofagypsumboardorplywoodceiling,woodceilingjoists,andatticinsulationwithitstopexposedtoanopenairspace.Thetemperatureappliedtothegypsumboardorplywoodshallbeintherangeof18to24176;C(64to75176;F).Theairtemperatureabovetheinsulationshallcorrespondtowinterconditionsandmayrangefrom-46176;Cto10176;C(-51to50176;F).Thegypsumboardorplywoodceilingshallbesealedtopreventdirectairflowbetweenthewarmandcoldsidesofthesystem.1.3Thispracticeappliestoawidevarietyofloose-fillorblanketthermalinsulationproductsincludingfibrousglass,rock/slagwool,orcellulosicfibermaterials;granulartypesincludingvermiculiteandperlite;pelletizedproducts;andanyotherinsulationmaterialthatmaybeinstalledpneumaticallyorpouredinplace.Thepracticeconsiderstheeffectsonheattransferofstructures,specificallytheceilingjoists,substrate,forexample,gypsumboard,airfilms,andpossiblefacings,films,orothermaterialsthatmaybeusedinconjunctionwiththeinsulation.1.4Thispracticemeasuresthethermalresistanceoftheattic/ceilingsysteminwhichtheinsulationmaterialhasbeenpreconditionedaccordingtothematerialSpecificationsC549,C665,C739,andC764.1.5Thespecimenpreparationtechniquesoutlinedinthisstandarddonotcoverthecharacterizationofloose-fillmaterialsintendedforenclosedapplications.1.6Thispracticemaybeusedtocharacterizematerialbehaviorundercontrolledsteady-statelaboratoryconditionsintendedtosimulateactualtemperatureconditionsofuse.Thepracticedoesnotsimulateforcedairflowconditions.1.7AllvaluesshallbereportedinbothSIandinch-poundunitsunlessspecifiedotherwisebytheclient.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q25
【国际标准分类号】:91_120_10
【页数】:8P.;A4
【正文语种】: